Display Server has been shutdown 6 times in 90 seconds

[rudra-b]

dear friends,
i am using FC8 on a dell optiplex desktop, which is under NFS. frequently while stratup it gives error:
"Display Server has been shutdown 6 times in 90 seconds..."

as i guess something is rotten with xorg.conf, i tried to change it but in vain. here i am putting my existing /etx/X11/xorg.conf

# Xorg configuration created by pyxf86config

Section "ServerLayout"
Identifier "Default Layout"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
EndSection

Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "us+inet"
EndSection

Section "Device"
Identifier "Videocard0"
Driver "intel"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

can anyone suggest me what is wrong ang if possible,why?

[rudra-b]

another thing that i have recognised is if i restart the machine, it comes to graphical window, but nis binding is failed. it gos to that "display server failed" as soon as i restart the ypbind as root.

plz help